Electric transmission of intelligence.



PATENTBD'PEB. 1s, 1.908.

I. KITSEB. ELECTRIC TRANSMISSION OF INTELLIGENGE.

APPLIGATION FILED MAY 14. 1906.

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ISiDOR- KITSEE, OF PHlLADEl'JPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALFLATlA, OF PHILADELPHIA, PENNSYLVANIA.

TO WILLIAM ELECTRIC TRANSMISSION OF INTELLIGENCE.

Specification of Letters Patent.

Patented Feb. 18, 1908.

Application filed l/[aylln 1906; Serial No. 3163147.

-ransmission of Intelligence, of which the following is a specification.

My invention relates to an improvementin electric transmission ofintelligence. It's object is to protect the instruments used in lines oftransmission, such as telegraph instruments, from the inductiveinfluence of neighboring wires;-

1t is also. the aim of my invention to pre-- vent the undue accumulationof such inductive influence on a line of transmission.

it is well known that a line carrying heavy current will induce on aneighboring wire impulses through the variations of such cur- -rent andmore so, if these heavy currents are alternating or phase. Inducedimpulses will readily flow through electro-static devices, such ascondensers, but their flow-will be retarded throu h such devices asinductive resistances, an il two paths are presented for the flow ofsuch induced impulses, one path including condensers and one pathincluding inductive resistances, the impulses will select the path withthe condensers and more so if this path leads to the ground. In carryingout my invention, I have taken advan tage of these properties'of inducedimpulses in the following manner: The receiving devices in telegraphyconsist generally of electro-inagne tic coils, offering more or lessinductive resistances, and I therefore shunt these coils withelectro-static devices, such as condensers, connecting these condensersto the ground. But as in a wire of comparal tively great length, theaccumulated induct- 'ive influence is of such volume that they may stillinterfere with the working of the receiving devices, I insert in thchneat different points inductive resistances, placing againa shuntincluding condensers, around such resistances and connecting thesecondensers, as the first named condensers, to the ground. To stillfurther prevent the accumulation of the inductive'influcnco, I placealso at different points in this line inductive resistances, but do notshunt the same. lm ulses induced in this line at any point, wil not flowover the whole line, but wi ll seek the path of least resistance forthem, that is, the path consisting of the condensers and ground, and theundue accumulation of induction, even in a very long wire,.is therebyprevented.

Referring to the drawing, which illustrates in diagrammatic view myinvention, 1 is the circuit carrying the inducing currents 8 the circuitfor transmission of intelligence, here shown as a telegraph line; 3 arethe electro magneticreceiving instruments inserted in said line. I havenot shown in this line the transmitting devices or the necessarybatteries, as the same has no'influence on my invention, are well knownand may differ in the different typespf transmission.

9 are the inductive resistances placed in the lineand shunted; 10 arethe inductive resistances placed in the line but not shunted the shuntaround the receiving device as well as the inductive resistances 9comprises the condensers 5, 5, connected through the wire 6 to theground E.

Having now described my invention, what I claim as new and desire tosecureby Letters Patent is: I

.1. In combination with a power line, a line of transmission positionedin the region of the inducing influence of said power line and means toshield the terminal devices from the induced impulses, said meanscomprising a series of mpedance coils distributed along the line inseries, a direct shunt for one or the other of said impedance coils,said shunt including capacity devices and a ground connection for saidshunt.

2.111 combination with a power line, a line of transmission positionedin the inducing region thereof, clectro-magnetic receiving devices forthe line of transmission and means to shield said devices from theinduced impulses, said means comprising for the devices a direct shunthaving no impedance but capacity and a ground for said shunt and furthercomprising a series of impedance coils distributed along the line, adirect shunt, having practically no inductance but capacity, for saidcoils and a ground therefor.

3. Means to induce impulses in a telegraphic line connected toclectro-magnetic receiving devices, said. means comprising a. 195neighboring wire carrying a phase current, in combination with means toshield said re.- ceiving devices from the induced impulses,

said means comprising a direct shimt with practically no impedance butcapacity for each of said receiving devices, aground for each of saidshunts and further comprising a series of impedance coils distributedalong the line, a direct shunt with practically no impedance butcapacity 'for sa d coils and a ground for each of said shunts. 4. Atelegraphic circuit, v electro-magnetic receiving devices in saidcircuit and means to shield said receiving devices from impulses inducedthrough neighboring wires, said means comprising a direct shunt withpractically no impedance but capacity for each of said electro-magnticdevices, a ground -I SIDOR KITSEE.

Witnesses-z MARY C. SMITH, ALVAH RITTENHOUSE.

